62results about How to "Improve turning ability" patented technology

The invention relates to a high-flexibility three-DOF (Degree of Freedom) spatial parallel mechanism, belonging to the technical field of numerical control machines, and comprising a mobile platform, a fixed platform, a first branched chain, a second branched chain and a third branched chain, wherein the mobile and fixed platforms are provided with an actuator respectively; the first and second branched chains are connected between the mobile and fixed platforms and have the same structure; and the third branched chain is connected between the mobile and fixed platforms and has a structure different from the structure of the first second branched chains. The first, second and third branched chains all contain an actively-driving kinematic pair and are respectively connected with the fixed and mobile platforms to form a spatial parallel closed-loop mechanism. The spatial parallel closed-loop mechanism drives the mobile platform to move by three input motions to realize one mobile DOF and two rotational DOFs. The spatial parallel mechanism has high flexibility, specific rotational axis, relatively simple associated movement and other characteristics, and the operation precision and quality of the mechanism can be ensured more easily.

The invention relates to a driving structure of a robot platform, comprising at least three groups of wheels arranged on a chassis of the platform; each group of wheels are symmetrically arranged at the two sides of the chassis of the platform, wherein, at least one group is driving wheels, and at least one group is steering wheels; the wheel shafts of the wheels at the same side of the front two groups of wheels of the chassis of the platform are connected with a rocker arm which can rotate in a plane that is vertical to the wheel shaft. The invention also discloses a platform control device. A control device also comprises a system monitoring module which can monitor the operation condition of the robot platform in real time; the system monitoring module can provide the information of the operation condition of the robot platform in real time; when the unpredictable problem occurs in the system can not be solved, the system monitoring module can inform the user to get involved. The invention improves the driving structure and the platform control device of the robot platform, thus ensuring the safety performance of the robot.

The invention provides a gas-powered soft-bodied crawling robot and a manufacturing and controlling method thereof. The gas-powered soft-bodied crawling robot comprises at least two inflation extension type actuators, a connecting ring and a contact hand, the at least two inflation extension type actuators are combined side by side through the connecting ring and the contact hand to form the gas-powered soft-bodied crawling robot. The gas-powered soft-bodied crawling robot is suitable for pipeline detection, the crawling efficiency in the current soft-bodied robot pipeline can be improved, the robot can be suitable for multiple types of pipelines, it is proved that the designed soft-bodied robot can freely crawl at the high speed in the pipeline, the influence of the self gravity can be overcome, the good steering capacity is achieved, the robot can adapt to complex pipelines, meanwhile, the designed soft-bodied robot is flexible, and good in flexibility, and through carrying of an endoscope camera, the pipeline detection task is finished.

A spatial parallel mechanism with no-coupling two translational one rotating tree- degree-of-freedom consists of a moving platform, a quiet platform and three bypasses connecting with the two platforms. Between the moving platform and the quite platform, the first bypass is connected in series with a moving pair and a cylindrical pair perpendicular to the moving pair; the first bypass connected in series with a cylindrical pair and two rotation pairs parallel to the axis of the cylindrical pair orderly and the third bypass is connected in series with a cylindrical pair two rotation pairs parallel to the axis of the cylindrical pair and a rotation pair vehicle to the axes of the two rotation pairs orderly; the three bypasses are respectively and pairwise perpendicular to the axis of the motion pair on the moving platform, thus forming spatial orthogonal structure; The axis of the cylindrical pair on the moving platform of the first bypass is coincident with the axis of the rotation pair on the moving platform of the second bypass, and is parallel to the axis of the rotating pair on the moving platform of the third bypass. By the control of the linear input of the driving pair on the quite platform, the two-dimensional movement and one- dimensional output on the moving platform can be realized.

The invention discloses a double-hinged-joint double-mode anti-explosion type inclined shaft full face rock tunnel boring machine comprising a cutter head tunneling mechanism, a shielding device and a driving device, wherein the cutter head tunneling mechanism is used for breaking rock, the shielding device comprises a front shield, a middle shield and a rear shield, wherein the front shield, the middle shield and the rear shield are connected in sequence, the driving device is installed on the front shield, connected with the cutter head tunneling mechanism and used for driving a cutter head to rotate, the front shield and the middle shield are actively hinged, and the middle shield and the rear shield are passively hinged. The front shield and the middle shield are actively hinged, and the middle shield and the rear shield are passively hinged, namely, the shielding device is of a double-hinged-joint structure, in this way, the double-hinged-joint double-mode anti-explosion type inclined shaft full face rock tunnel boring machine can be adapted to the working condition that in an inclined shaft tunnel, the radius of curvature of the joint between a transitional gradient and a slope is small, cornering ability is high, and complete-machine posture adjustment is convenient.

The invention relates to the technical field of petroleum equipment, and discloses a petroleum drilling rod outer surface cleaning device. The petroleum drilling rod outer surface cleaning device comprises a drilling rod body, the outer surface of the drilling rod body is provided with a first clamping ring in a sleeved manner, first motors are embedded on the upper side and the lower side of theleft side face of the first clamping ring, output shafts of the first motors are fixedly connected with rotating shafts through couplers, the ends, away from the first motors, of the rotating shafts are fixedly connected with rollers, the position, located on the left side of the first clamping ring, of the outer surface of the drilling rod body is sleeved with a second clamping ring, an annular sliding groove matched with the rollers is formed in the right side face of the second clamping ring, and the rollers are located in the annular sliding groove. According to the petroleum drilling rodouter surface cleaning device, removed dirt and iron rust can be collected, air pollution can be prevented, the whole device is high in transmission efficiency, slippage due to dirt and iron rust outside the drilling rod body can be avoided, and the capacity of the whole device for driving the petroleum drilling rod to move is higher.

The invention relates to an isotropic ankle joint rehabilitation parallel connecting mechanism, which comprises a base, a movable platform and movement support chains, wherein a first support column and a second support column are respectively and fixedly arranged on the base, a first motor and a second motor are respectively arranged on the first support column and the second support column, a third motor is arranged on the base, the upper end surface of the movable platform is a pedal surface, a first telescopic rod and an L-shaped third telescopic rod are vertically and fixedly arranged at the upper end surface of the movable platform, a second telescopic rod is vertically and fixedly arranged at the lower end surface of the movable platform, the first motor is connected with the first telescopic rod on the movable platform through the first movement support chain to control the left and right swinging of the movable platform so as to realize the inward / outward turning movement of an ankle joint, and the second motor is connected with the second telescopic rod on the movable platform through the second movement support chain to control the front and back swinging of the movable platform so as to realize the extending movement of toes / back of the ankle joint.

A skate device that has one or more turnable wheels. In one group of embodiments, the turnable wheels may be linked such that when one wheel turns another wheel turns in a manner that facilitates turning. In another group of embodiments, the turnable wheels are not so linked. The skate device of the present invention may achieve turning from a point underneath the shoe or foot region of the skate, thus more closely approximately turning on ice skates. The skate device may have inline wheels and maybe relatively light-weight and compact.

A folding kayak includes fore and aft subassemblies which are joined together and are covered by a water-impermeable skin to provide a watercraft with the favorable attributes both hard shell and skin on frame kayaks, with none of the disadvantages. In addition, one or more hydraulic adjustment mechanisms provide the kayak with characteristics of a plurality of different rigid body kayaks, with different operational characteristics, suitable for open-ocean or closed-water environments as desired. Ribs which are part of the kayak assembly have a relatively flat profile, making the kayak perform more favorably in adverse water conditions, and also giving the kayak some resilience and flexibility when encountering obstructions in the water. In one aspect, the kayak subassemblies may be joined, at least in part, by corrugated splines. By rotating these corrugated splines within elongate tubes that form part of the respective subassemblies, it is possible to remove crystalline, corrosive, and other build-up. The kayak may be disassembled into a relatively compact, easily transportable package.

The invention discloses a singularity-free complete isotropic space three-dimensional rotating parallel mechanism which is composed of a movable platform, a fixed platform, a first movement branched chain, a second movement branched chain and a third movement branched chain. The movable platform and the fixed platform are connected through the first movement branched chain, the second movement branched chain and the third movement branched chain. The singularity-free complete isotropic space three-dimensional rotating parallel mechanism is characterized in that the first movement branched chain is used for driving movement of the movable platform in one three-dimensional rotating direction, the second movement branched chain is used for driving movement of the movable platform in the second three-dimensional rotating direction, and the third movement branched chain is used for driving movement of the movable platform in the other three-dimensional rotating direction. The singularity-free complete isotropic space three-dimensional rotating parallel mechanism is high in rotating capacity, large in working space, stable and continuous in rotation and free of driving singularities, the movement coupling problem is effectively solved, and the energy conservation and environmental protection effects are achieved.

The invention discloses a novel column end node of a building structure, namely a column is connected with a floor slab by arranging two steel plates. The contact area of the two steel plates is smaller than the section area of a column end; the configured quantity of vertical steel bars of the column between the two steel plates is relatively less than that of the column end; the rigidity of the node and the bending resistance are lower than that of other parts of the column end; a control node area is an energy consumption area of the column, the column end is avoided from generating damage under the action of horizontal loading of earthquake or wind and the like and the safety of the whole column is protected, thus achieving the effect of strong column and weak beam of code requirements, improving the damage resistance of the building under the action of loading of earthquake and wind, and effectively protecting the safety of lives and property of people.

The invention relates to hand-push type small deicing equipment which comprises a trolley, a material tank, a stirring paddle, a rotary push plate and a motor. The trolley is composed of a base plate, push rods and wheels. The hand-push type small deicing equipment comprises the material tank with a stirring function, salt particles and a snow melting agent are sprayed on the pavement after being stirred and mixed, the spraying process is controlled through the rotary motor and the rotary push plate, the automation degree is high, and therefore defects of a traditional manual salt spreading operation mode are greatly overcome, labor is saved for an enterprise, implementation is accelerated, and the ice surface is effectively cleaned.

A six-freedom-degree series-parallel domestic dynamic seat comprises an engine base, a middle platform, a movable platform, a seat body, a control hardware part and six branches. The seat body is arranged on the movable platform, and the control hardware part is arranged on the engine base. The three RPS branches are connected to the engine base and the middle platform, one end of the linear drive moving pair in the three RPS branches is connected with the engine base through a rotating pair, the other end of the linear drive moving pair is connected with the middle platform through a composite spherical hinge, and the two ends of the three branches are evenly distributed on the engine base and the middle platform in a circumferential mode; the three SPR branches are connected with the middle platform and the movable platform, one end of the linear drive moving pair in the three SRP branches is connected with the middle platform through a composite spherical hinge, the other end of the linear drive moving pair is connected with the movable platform through a rotating pair, and the two ends of the three SRP branches are evenly distributed on the middle platform and the movable platform in a circumferential mode. The six-freedom-degree series-parallel domestic dynamic seat is easy to operate, high in rigidity, small in occupied area and high in rotation capacity, working space is large, and actions are sensitive.

A folding kayak includes fore and aft subassemblies which are joined together and are covered by a water-impermeable skin to provide a watercraft with the favorable attributes both hard shell and skin on frame kayaks, with none of the disadvantages. In addition, one or more hydraulic adjustment mechanisms provide the kayak with characteristics of a plurality of different rigid body kayaks, with different operational characteristics, suitable for open-ocean or closed-water environments as desired. Ribs which are part of the kayak assembly have a relatively flat profile, making the kayak perform more favorably in adverse water conditions, and also giving the kayak some resilience and flexibility when encountering obstructions in the water. In one aspect, the kayak subassemblies may be joined, at least in part, by corrugated splines. By rotating these corrugated splines within elongate tubes that form part of the respective subassemblies, it is possible to remove crystalline, corrosive, and other build-up. The kayak may be disassembled into a relatively compact, easily transportable package.

The invention discloses a vertical highway transport vehicle and relates to a highway transport vehicle used for transporting an aerospace vehicle. The vertical highway transport vehicle can meet the requirements for the high stability, the high smoothness and the high maneuverability of products in various states in the vertical transportation process. The vertical highway transport vehicle comprises a vehicle frame assembly (1) and a traction mechanism (2). The vehicle frame assembly comprises a vehicle frame body and widened beams (3). The vehicle frame body comprises a front bearing face (101), a middle bearing face (102) and a rear bearing face (103) which are sequentially and fixedly connected. The middle bearing face is lower than the front bearing face and the rear bearing face. The two sides of the middle bearing face are each provided with one widened beam. A front wheel set (4) and a rear wheel set (5) are installed below the front bearing face and the rear bearing face through slewing bearings respectively. Traction support lugs (7) are arranged on the front wheel set and the rear wheel set and used for connecting the traction mechanism.

The invention discloses a multi-dimensional moving disc type underwater glider and relates to the field of underwater gliders. The underwater glider is in a disc structure form. A main body structurecan move in all directions and has same hydrodynamic performance as a result of the symmetrical structures. A buoyancy adjusting device can adjust the size of net buoyance to generate a driving force,through which the underwater glider sinks and floats and the underwater glider suspends underwater. A linked adjusting device adjusts distribution of center of gravity of the underwater glider by linking a follow-up stable wing and a sliding mass block, so that the underwater glider glides stably along a direction and turns quickly. The underwater glider has a multi-dimensional moving ability inan underwater space and can meet the actual demand on investigation of a three-dimensional marine environment and the demand on long-term monitoring and data acquisition in a key area.

The invention relates to agricultural machinery, in particular to a traction type peanut picking combine harvester. The traction type peanut picking combine harvester comprises a rack and further comprises a traction device, a picking device, a feeding device and a peanut picking and cleaning device, wherein the traction device, the picking device, the feeding device and the peanut picking and cleaning device are sequentially arranged from front to back, the traction device and the picking device are connected with the front end of the rack, the peanut picking and cleaning device is arranged on the rack, two supporting wheels and two steering wheels are symmetrically arranged at the bottom of the rack, the supporting wheels are connected with the front end of the rack, and the steering wheels are symmetrically installed on the two sides of the rear end of the rack through an axle. The traction type peanut picking combine harvester integrates picking, fruit picking and cleaning, and iscompact and reasonable in structure, high in space utilization rate, high in advancing stability, good in cleaning effect and small in turning radius.

The invention discloses an independent steering type electromechanical composite transmission device for a crawler. The independent steering type electromechanical composite transmission device comprises four planet rows, four electromotors / generators and three operation elements. Input power is transmitted to a gear ring of one planet row through an idler straight gear, is transmitted by the electromechanical composite transmission device, then, is output through planet carries of other planet rows, and is finally transmitted to drive wheels on the two sides of a vehicle body through side transmission. The independent steering type electromechanical composite transmission device can realize shunt transmission of power in the range of normal vehicle speed, and can realize backflow of brake power from the inner side to the outer side at steering time.

The invention relates to the technical field of carbonate oil and gas field development, and provides a fracture network volumetric acid fracturing method of a carbonate reservoir. The fracture network volumetric acid fracturing method includes the following steps that a low-viscosity emulsion slippery water acid solution is injected into a carbonate oil and gas field well, and migration resistance of the low-viscosity emulsion slippery water acid solution near the wellbore area is lowered; the low-viscosity emulsion slippery water acid solution is injected into the carbonate oil and gas fieldwell, and fracture network volumetric acid fracturing modification is conducted on a dominant fracture channel near the perforation section; vegetable glue liquid is pumped into the carbonate oil andgas field well, and the steering process of low-viscosity emulsion slippery water acid solution is completed; the low-viscosity emulsion slippery water acid solution is continuously pumped into the carbonate oil and gas field well, and the fracture network volumetric acid fracturing modification process is completed; and displacement fluid is injected into the carbonate oil and gas field well, and the oil and gas production is tested. According to the fracture network volumetric acid fracturing method of the carbonate reservoir, the low-viscosity emulsion slippery water acid solution can lower the migration resistance of acid liquor in fractures near the well to the distance, and a long and complex fracture system is formed advantageously; and meanwhile, the vegetable glue liquid has thehigh steering ability and glue is prone to being broken by oxygen, the secondary damage of steering fluid to the reservoir can be reduced, and the purposes of carbonate acid fracturing well stimulation and stable production are achieved.

The invention provides a self-resetting steel frame beam-side column joint and a construction method thereof. The self-resetting steel frame beam-side column joint comprises a steel beam, wherein thesteel beam is horizontally arranged on one side of a steel column; a shape memory alloy plate is arranged between a flange of the steel beam and a flange of the steel column, and the shape memory alloy plate is arranged on the outer side of the flange of the steel beam; one end of the shape memory alloy plate is connected with the flange of the steel beam, and the other end of the shape memory alloy plate is connected with the flange of the steel column; and friction energy dissipaters are symmetrically arranged on the two sides of a web of the steel beam, one end of each friction energy dissipater is connected with the steel beam, and the other end of each friction energy dissipater is connected with the flange of the steel column. According to the self-resetting steel frame beam-side column joint and the construction method thereof, the shape memory alloy plate is arranged, and the self-resetting function of the joint is achieved by utilizing the plastic deformation of the shape memory alloy plate; and friction energy dissipation can be achieved between the friction energy dissipaters and the flange and the web of the steel beam, and the friction energy dissipaters and the shapememory alloy plate generate a synergistic effect to jointly absorb seismic energy at the joint, so that the structural ductility and energy dissipation capacity of the steel frame beam-side column joint are effectively improved, and the post-earthquake repair cost of the structure is reduced.

The invention discloses an ecological restoration treatment device for soil and an application method thereof. The ecological restoration treatment device comprises a traction mechanism used for traction, a spraying mechanism used for soil turning and spraying, an overturning mechanism and a transmission mechanism used for providing the overturning effect, wherein a power mechanism is installed onthe traction mechanism, a lifting mechanism is arranged on the lower side of the traction mechanism, the transmission mechanism is connected to the lifting mechanism, the spraying mechanism is installed on the transmission mechanism, and the overturning mechanism is arranged between the transmission mechanism and the spraying mechanism. According to the device, an overturning soil turning plate and a rotating rod are matched for overturning and rotating, so that the soil turning capacity can be improved, the liquid medicine spraying effect can be improved, the abrasion between equipment and machinery can be reduced, the efficiency can be improved, and the device can adapt to various soil conditions by utilizing the traction mechanism and a lifting adjusting mechanism of the lifting mechanism, so that the practicability of the device is improved.

The invention provides a pneumatic wave power generation device, and relates to the field of ocean wave energy utilization. The device comprises a buoyancy compartment, a seawater flow channel, a flow guide plate, an air flow channel, an air turbine and a generator, the buoyancy compartment is arranged on a horizontal section of the seawater flow channel composed of a vertical section flow channel and a horizontal section flow channel which are communicated with each other, and the air flow channel is arranged at the top of the vertical section flow channel and communicated with the vertical section flow channel; a seawater flow channel opening is formed in the end, away from the vertical section flow channel, of the horizontal section flow channel. The air turbine is connected with the air flow channel and the generator. The width of the two sides of the end, close to the vertical section flow channel, of the buoyancy cabin exceeds the width of the seawater flow channel to form a double-wing end, and the width of the end, close to the seawater flow channel opening, of the buoyancy cabin is gradually narrowed till a tip is formed. The invention further provides a double-body pneumatic wave power generation ship comprising the device. The device provided by the invention can realize high-efficiency broadband energy harvesting, and the power generation ship can realize mooring-free automatic position keeping in deep and far sea.

The invention provides a self-resetting steel frame beam-middle column joint and a construction method thereof. The self-resetting steel frame beam-middle column joint comprises two steel beams; the two steel beams are horizontally arranged on two sides of a middle column; a shape memory alloy bent steel plate is arranged between the flange of each of the steel beams and the flange of the middle column; the shape memory alloy bent steel plates are arranged on the outer sides of the flanges of the steel beams; one ends of the shape memory alloy bent steel plates are connected with the flanges of the steel beam, and the other ends are connected with the flange of the middle column; friction energy dissipaters are symmetrically arranged on two sides of webs of the steel beams; and one ends ofthe friction energy dissipaters are connected with the steel beams, and the other ends are connected with the flange of the middle column. The self-resetting function of the joint is achieved throughplastic deformation of the shape memory alloy bent steel plates; and friction energy dissipation can be achieved between the friction energy dissipaters and the flanges and webs of the steel beams, the friction energy dissipaters and the shape memory alloy bent steel plates generate a synergistic effect to jointly absorb earthquake energy at the joint, the structural ductility and energy dissipation capacity of the steel frame beam-middle column joint are effectively improved, and the post-earthquake repair cost is reduced.

The invention discloses an underactuated spherical underwater robot with flexible movement: the novel spherical underwater robot mainly includes a straight-line propelled duct propeller mechanism, a horizontal plane flywheel steering mechanism, a vertical plane heavy pendulum pitching mechanism and a pressure-resistant sealed spherical shell Structure; the robot has a novel steering mechanism, which enables it to turn with zero radius in water; the single propeller design meets the requirements of low cost and high operating efficiency; the round transparent shell with support frame can resist certain deep water pressure, and can also The sensors installed inside are convenient for monitoring water information; the robot can be used as a carrier for reconnaissance equipment, underwater and underwater operating systems, and communication systems to perform various tasks in offshore areas that humans cannot directly complete.

A vehicle-mounted self-rescue crawler belt device comprises a lifting part, a guide rail, driving devices, a crawler belt fixing part and crawler belt wheel parts, the driving devices comprise the first driving device and the second driving device, the lifting part comprises a fixed saddle, a movable saddle and a transmission screw rod, and the fixed saddle is fixed to the lower portion of a vehicle frame and vertically arranged. One end of the transmission screw rod is connected with a transmission shaft of the first driving device through a guide rail, a first connecting part is arranged below the lifting part, a second connecting part is arranged above the crawler belt fixing part, the two connecting parts are connected in a matched mode to fix the crawler belt fixing part, and the crawler belt fixing part comprises a second driving device and a plurality of connecting through shafts. The crawler wheel part is connected with the crawler fixing part through a preset connecting through shaft, the second driving device is located on the outer side of the crawler fixing part, and a transmission shaft is rotationally connected with a driving wheel shaft on the crawler wheel part. The device has the advantages of being easy and convenient to operate and high in practicability.

The invention discloses an object-carrying robot which comprises a box body, wherein springs are fixedly connected to the bottom of the inner cavity of the box body; a movable plate is fixedly connected to the top of the springs; a rotating rod is movably connected to the bottom of the box body; a gear is sleeved on the surface of the rotating rod; an electric telescopic rod is fixedly connected to the right side of the bottom of the box body; and a toothed plate is fixedly connected to the left end of the electric telescopic rod. By virtue of the cooperation of the box body, the springs, themovable plate, the rotating rod, the gear, the electric telescopic rod, the toothed plate, a connecting plate, supporting plates, a wormshaft, rolling wheels, a motor, a worm wheel, vertical rods andswivel wheels, the object-carrying robot is easy to move and can carry objects to run; and at the same time, the object-carrying robot is easy to steer and has high steering ability. The object-carrying robot solves the problems that an existing object-carrying robot has low steering ability and can only perform simple straight travel which can not meet the needs of people.

A non-coupling two-movement-rotation three-degree-of-freedom space parallel mechanism is composed of a dynamic and a static platform and three branches connecting the two platforms. From the static platform to the dynamic platform, the first branch is a moving pair and the A vertical cylindrical pair is connected in series; the second branch is composed of a cylindrical pair and two rotating pairs parallel to the cylindrical secondary axis; the third branch is composed of a cylindrical pair and two rotating pairs parallel to the cylindrical secondary axis. Two revolving pairs and a revolving pair perpendicular to the axes of the first two revolving pairs are connected in series; the three branches are respectively located on the static platform, and the axes of the moving pairs on the static platform are perpendicular to each other, so that the three branches are arranged orthogonally in space; The auxiliary axis of the cylinder on the moving platform in one branch coincides with the axis of the rotating pair on the moving platform in the second branch, and is parallel to the axis of the rotating pair on the moving platform in the third branch; The linear input of the active pair on the platform, the movable platform can realize two-dimensional movement and one-dimensional rotation output.

The invention relates to a water plugging agent and a preparation method thereof. The water plugging agent comprises the following components in parts by weight: 100 to 120 parts of acrylamide, 60 to 100 parts of a strength monomer, 10 to 20 parts of a high-adhesion promoting monomer, 0.01 to 0.1 part of a micro-crosslinking agent, 1 to 4 parts of an associative thickener, 40 to 80 parts of a response monomer, 2 to 6 parts of an associative monomer, 0 to 27 parts of potassium hydroxide, 320 to 400 parts of water, 200 to 280 parts of an oily solvent, 20 to 40 parts of an emulsifier, 2 to 5 parts of a co-emulsifier, 1 to 5 parts of a polymerization stabilizer, 0.02 to 0.5 part of an initiator and 25 to 35 parts of a phase inversion agent. The water plugging agent disclosed by the invention is of a micro-crosslinking association network structure, mainly adopts intermolecular crosslinking, has dense grid holes, thick molecular chains, strong water molecule wrapping capacity, more stable gel and lower dehydration rate, can effectively reduce the permeability of a rock core, and has a good plugging effect.

The invention discloses a turnover telescopic arm on an electronic welding machine. The turnover telescopic arm comprises a motor, a first connection rod, a second connection rod, a rotary shaft, an adapter box, a cylinder, a connection plate and a telescopic clamp arm, wherein the first connection rod is connected to a main shaft of the motor; the other end of the first connection rod is hinged with the second connection rod; the rotary shaft is arranged at the other end of the second connection rod; the rotary shaft is connected with the adapter box; the adapter box is externally connected with the telescopic clamp arm; the adapter box drives the telescopic clamp arm to carry out horizontal and vertical turnover motions; the telescopic clamp arm comprises a telescopic arm and an arm bin; the telescopic arm is installed in the arm bin in a sleeving manner; the telescopic arm is connected with the cylinder through the connection plate; and the cylinder pushes the telescopic arm to carry out a relative telescopic motion relative to the arm bin.